Miner&#39;s carbid-lamp.



F. GUY.

MINERS CARBID LAMP.

APPLICATION FILED 11,111.1, 1911.

Patented May 26, 1914.

' UNITED STATES PATENT OFFICE.

FRANK GUY, OF SPRINGFIELD, ILLINOIS.

MINERS CARBID-LAMP.

To all whom it may concern.'

Be it known that I, FRANKGUY, a citizen l of the United States, residing at Springfield, y in the county of Sangamon and State of illinois, have invented certain new and useful Improvements in Miners Carbid-Lamps, otl which the following is a spccilication.

This invention relates to the subject of portable lamps. more particularly of the type containing their own gas-generating means.

To this end the invention contemplates a simple and practical portable lamp so designed and constructed as to be especially useful as a miner`s lamp. and embodying means which provide for the safe, reliable and economical generation of acetylene gas, the production of which is under the immediate and complete control of the operator.

(')ther objects of the invention include the provision oi' means1 for thoroughly ltering and cooling the generated gas before its deliver)v to the lamp burner, besides insuring the ma intenance of the. light during blasting operations. ln the latter connection the invention prm'desl novel means to compensate l'or the sudden increase in external pressure, and gusts of wind, resulting from the concussion when blasting shots are fired, and whit h very frequently blow out the light of the ininer`s lamp. This is avoided in the present invention and, furthermore, the compensating deviee,` also .serve to prevent blowingl water out ol the` reservoir upon an increase in the internal gas pressure in the main fas clnunber ot' the easing.

Another object of the invention is to provide a novel water-supply device that is so winstrut-ted and valved as to insure a reliable feed of the water into the carbid,- while al the same time being protected against clogging'.

t general object of the invent-ion is to providtl a lamp ot' the character described that is exceedingly simple. and not easily broken or deranged.

The invention censists in the novel construction. combination and arrangement of Specification of Letters Patent. Application filed March 1, 1911.

gas pressure in the parts hereinafter more fully described, illus- [rated and Claimed.

)t preferred embodiment of the invention is shown in the accompanying drawings, in i' whirfh- Figure l i` a side elevation oi' an acetylene lamp embodying tht present invention. I Eig. 2

is a vertical longitudinal sectional less, by a valve head or button Patented May 26, 1914. serial No. 611,706.

view through the pressure compensating device and the body of the lamp on the line' 3&3 of Fig. l. Fig. 4 is a detail sectional view showing the guard screen attachment for the burner.

Like references designate corresponding parts in the several figures of the drawing.

lThe improved lamp embodies a casing of any suitable design and capacity, but preferably of a general cylindrical form, and also preferably made of sheet metal. This casing is designated in its entirety by the reference numeral l. i hook i on the casing 1 serves to support the lamp on the users cap and also serves as the handle of the lam 'lhe casing l has suitably fitted therein an interior separating diaphragm 3. This diaphragm divides the interior of the casing into an upper water reservoir l, and a lower main gas and carbid chamber 5. The sepa rating diaphragm 3 is preferably downwardly dished and forms the bottom of the water reservoir l, while the top 6 of the casing l constitutes the top of said reservoir and is provided with a filling opening 7 for water, the said filling opening being closed by means of a` removable filler cap 8. The rap 8 is of hollow formation and is provided at top and bottom with vent orilices 9, which are in communication with the interior of the eap and with the reservoir 4, thus providing what. may be termed a water trap, within the cap, to prevent the water blowing out of the reservoir upon an increase in the niain gas chamber 5.

l`he main gas chamber 5 is provided with an open bottom adapted to be closed by a removable bottoni cap 10, preferably in the form ot' a screw-cap engaging threads l1 on the lower end portion of thc casing, as plainly appears from the drawings.

'ater is supplied to the chemical in the chamber 5 by a. water-supply device consisting ot' a tube l2 arranged longitudinally of the casing, and having its upper end projecting through the casing top 6, while its lower end lies within the `gas chamber 5 and is provided with the bottom outlet opening 13, which is covered and uncovered, more or 14, carried at the lower extremity` of an adjustable valve stent l5 extending longitudinally through the tube 1i' and provided at its upper end with an exterior operating handle 16. Also the upper end portion of the stem i5 is rigid with an adjusting member 17 consisting of a hollow screw engaging a threaded socket f t e bore through the 18 at the upper end o if the gas pressure at the burner tip be increased coincidently with the concussion and to a degree corresponding to the force of the tube. The tube 12 has inlet apertures 19 in concussion; but it is also found that if the communication with its bore and with the pressure of gas at the burner tip be too sudwater reservoir 4. A feature of practical denly increased the sudden excessive presimportance in the present invention resides sure will blowr the flame away from the in the, self-cleaning action of the valve head or button 14. By reason of the threaded In practice it is found that the concussions of shot firing tend to suddenly detach the and thus extinguish the iame, but that this detaching and avoide flame from the burner tip extinguishing of the flame may be small orifice of the burnertip and thus extinguish the light. I

understood from the foregoing description, but in explanation of the action of the preS- sure-compensating device 26 it should be stated that the concussion resulting from the firing-of blasting shots creates an external therefore provide ioo 10 member 17, at theupper en of the valve means responsive to the concussionand efstem 15, it will be observed that in the openfective to increase the gas pressure at tbe ing and closing operation, the valve head or burner tip at the instant concussion andV button 14 not only has a movement toward likewise effective to temper the pressure at and from the valve seat at the outlet end of the burner tip. This means and the mode 0f 15 the tube 12, but also has a rotary movement its operation will now be describe with the result that in turning the said valve Referring to Figs. 2 and 3, it will be seen head or button will dislodge carbid crust or that the burner tip 24 and the compressible dust on and about the lower end of the valve bulb 26 are both in communication with the tube, thereby keeping the outlet for the tube chamber formed by the conjunction of the 20 at all times perfectly clear. In other words diaphragm 3, the filter screen 20, and the the valve head or button has a revolving or circular wah of the casing 1, and that said inding action at the lower end of the valve chamber is filled with loose or interstitial tube which insures the maintenance of the material, the interstices of4 which are filled water supply for the carbid chamber. with gas. In case of concussion, the volume 25 Below the separating diaphragm 3 the casof gas contained in the bulb 26 will be forced ing has fitted therein a filtering diaphragm I`inward through the interstitial material consistin of a transverse filter screen 20 a which will'act as a cushion to absorb and porous a sorbent sheet 21, such as blotting distribute the concussive force to anextent paper at the under side of the screen 20, sufficient to prevent such sudden and exces- 30 and a filter paclng of loose material 22, sive increase of pressure at the burner tip as filling the space between said screen 20 and would be likely to extinguish the flame and the diaphragm 3, and which space constinever-the-less produce such timely and tutes a filtered gas chamber. This latter proper increase of pressure at the burner tip chamber is in communication with the gas as will prevent the extinguishing of the 35 outlet neck 23 for the external gas burner 24 fiame by the force of the concussion.

fitted therein, and is also in communication When the lamp is used in the mine, a rewith a gas port 31 in communication with flector 27 may be fitted over the gas outlet an externally arranged expansble and con- 23, and another practical use is suggested in tractible pressure-compensating device 26, Fig. 4, which illustrates a cylindrical closed 40 which device preferably' consists of a closed ard screen 28 fitted at one closed end over rubber bulb. the outlet 23 and having the burner 2A dis- The tube 12 extends downwardly into the posed therein and protected thereby from incarbid box in such a position that the lower' flammable material, such as hay and the like, part of the tube, and the valve14, will be while the lamp is in use in the stable or in 45 surrounded by the mass of carbidinthe box. the mine. The closed end of the guard- The end of the tube is fiat and the circular screen is rigidly connected with a collar 29 valve 14, of the same outer diameter as the surrounding the burner tube 23. A. ,screw tube, seats on the entire area of the lower 30 connects the collar with the burner tube. end of the tube, and when the valve is ro- When the collar and the connected guard- 50 tated and moved upwardly it will crush the screen are in place on the burner tube, the accretion of ash, &c., on the entire area of axis of the guard-screen is parallel to and the end of the tube, and when the valve is above vthe outwardly extended axis of the lowered to the necessary extent water from burner such a distance that the flame which the tube will be diffused radially between is naturally projected outwardly and up- 55 the to of the valve and the end of the tube wardly from the burner tip, will not peneand will be applied in the mass of carbid all trate the wall of the guard screen, and therearound the tube. This mode of diffusion is fore cannot ignite infiammable material adnew and admits of applying the water most jacent to the screen. effectively on a relatively large area of the The functions of the water-supply device 00 carbid. and the filtering diaphragm will be readily pressure on the bulb or bag 26, which in turn forces the gas with increased pressure through the burner with a. result of tending to prevent the ame from being blown out.

Other objects and advantages will be apparent wit-hout further description, and it will also be understood that changes in the form, proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

.What I claim is l. In au acet lene lamp, in combination with a lamp-body comprising a water chamber and a carbid chamber; a stationary tube in communication with the water chamber and having one terminal within the carbid chamber; a valve-stem adapted to rotate andmove longitudinallyA within said tube; and a valve rigid on the valve stem and hav- -ing a face adapted to engage and grind on the terminal of the tube within the carbid chamber.

2. In an acetylene lamp, the combination of a carbid box; a tube extending into the box in such position that the terminal part of the tube will be surrounded by the mass of carbid in the box; means for supplying water in the tube; and a valve seating on one end of the tube and effective to dilfuse water radially into the mass of carbid surrounding the terminal part of the tube.

3. In an acetylene lamp, the combination of a carbid box; a tube extending into the carbid box in such osition that the ter- ,minal part of the tu e will be surrounded by the mass of carbid in the box; means for supplying water in the tube; and a rotative and vertically movable valve adapted to seat on one end of the tube and effective to crush and grind the accretion on the end of the tube and likewise effective to diffuse water radially into the mass of carbid surrounding the tube.

4. Valve mechanism for acetylene lamps; comprising a .tube of suitable diameter positioned to be partially immersed 'in the charge of carbid in the lamp; a valve of substantially the same diameter as the tube and adapted to seat on the immersed end of the tube; and means for rotating the valve to crush accretion on the immersed end of the tube, and moving the valve in the longitudinal direction of the tube to control radial diffusion of liquid from the tube into the charge of carbid surrounding the valve and thel immersed part of the tube.

5. Valve mechanism for acetylene lamps; comprising a tube having a flat end adapted to serve as a seat for a rotative valve, a valve of substantially the' same diameter as the tube and fitted to seat on the entlre area of the fiat end of the tube; and means for rotating the valve and moving it in the longitudinal direction of the tube, to control radial diffusion of liquid between the valve and the valve seat.

G. In an acetylene lamp, the combination of a receptacle adapted to contain a quantity of carbid; a water-supply device having a terminal valve-seat in position to be surrounded by the body of carbid in the receptacle; a valve adapted to seat on said terminal valve-seat; and means for moving the valve relative to the terminal valve-seat to control radial diffusion of water between the valve and the valve-seat into the body of carbid surrounding them.

7. In an acetylene lamp, the combination of a receptacle adapted to contain a quantity of carbid; a water-supply device having a terminal valve-seat in position to be surrounded by the body of carbid in the receptacle; a valve adaptedto seat on said terminal valve-seat, and means for moving the valve toward or away from the valve-seat and rotating the valve relative to the valveseat, to control the radial diffusion of water V1nto the body of carbid surrounding them and to crush accretion on the valve and the valve-seat.

8. In an acetylene lamp, in combination with a lamp body com rising a water chamber and a carbid cham ie'; a stationary tube in communication with the water chamber and having one terminal within the carbid chamber, also, having a screw-threaded part; a valve stem within said tube; means for rotating the valve stem; a screw rigid on the valve stem and enga 'ng in the screwthreaded part of the tua, and a valve rigid on the valve stem and having a face adapted to ind and seat on the terminal of the tube wit in the carbid chamber.

In testimony whereof I hereunto ax my signature in the presence of two witnesses. FRANK GUY. Witnesses:

J. W. LARIMORE, JNO. L. KING. 

